
APPENDIX
B--63005EN/02
A. ALARM LIST
717
(7) Alarm messages (For I/O)
Error message Contents and solution
PROGRAM ALREADY EXISTS A program already exists on flash ROM. (At BLANK)
PROGRAM ALREADY EXISTS
(EXEC ?)
A program already exists on flash ROM.
Remedy) When the message is displayed, pressing the EXEC key again
causes write or erasure operation. (At write or erasure)
PROGRAM NOTHING There is no program on flash ROM.
ERASE ERROR
Flash ROM is abnormal. Replacement is required. Ask FANUC Service
L
WRITE ERROR
epresen
a
ve
or rep
acemen
.
S
READ ERROR
H
ANOTHER USED Flash ROM is used by other than PMC.
R
O
M
MUST BE IN EMG STOP
NOT EMG STOP
The CNC is not in the emergency stop state.
NO OPTION There is no ROM cassette option.
SIZE ERROR The sequence program is larger than the flash ROM size. (At write)
Remedy) Try the condense function. (EDIT/CLEAR screen) If the same
phenomenon is still observed, the flash ROM size must be en-
larged.
The sequence program to be read is larger than the RAM size. (At read)
Remedy) RAM must be enlarged.
H
I/O OPEN ERROR nn nn = --1: RS--232C is used by other than PMC.
Remedy) Check whether RS--232C is used by other than PMC.
On the online setting screen (see Section 8.5.1 in III), check
that “NOT USE” is indicated for RS--232C.
nn = 6: The RS--232C option is not found.
nn = 20: RS --232C connection is incorrect.
Remedy) Check whether channel setting, connection, baud rate, and
other settings are correct.
O
S
T
∙
F
D
I/O WRITE ERROR nn nn = 20: RS--232C connection is incorrect.
Remedy) Check whether channel setting, connection, baud rate, and
other settings are correct.
nn = 22: Communication cannot be performed correctly.
Remedy) Check whether the cable is broken.
C
A
S
∙
O
T
I/O READ ERROR nn nn = 20: RS--232C connection is incorrect.
Remedy) Check whether channel setting, connection, baud rate, and
other settings are correct.
nn = 22: Communication cannot be performed correctly.
Remedy) Check whether the cable is broken.
H
E
R
ADDRESS IS OUT OF RANGE
(xxxxxx)
Data for other than the PMC debugging RAM area was transfe rred.
xxxxxx: Indicates the transfer address.
S
DATA ERROR Illegal data was read.
Remedy) Check the cable and setting (speed).
When a program in C was being read into the 16i/18i/21i:
Remedy) Press soft keys [EDIT], [CLEAR], [CLRLNG], then [EXEC] to
clear the C area.
PROGRAM DATA ERROR An attempt was made to output data, but the data was illegal.
Remedy) Check the alarm on the alarm screen.